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galina1969 [7]
3 years ago
13

What is the perimeter of the triangle? units

Mathematics
1 answer:
Ludmilka [50]3 years ago
8 0

Answer:

10.5

Step-by-step explanation:

Its a right triangle, and the units were on right there, so I found the perimeter of the square it would be, then divided it by 2, because 2 triangles make a square.

brainiest?

(9+12)/2 = 10.5

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If f (x) = x² - 7, evaluate the following: f(12) f(-7)
Julli [10]

Answer: f(12) = 137, f(-7) = 42

Step-by-step explanation: In a function, what you want to do is plug in the value they give you for x. This means you substitute x with the value they are looking for.

In this case, they are looking at 12 and -7. Let's do 12 first.

The equation becomes (12^2) - 7. 12^2 is 144, and 144-7 is 137.

Now we do -7. The equation becomes (-7)^2 - 7. -7^2 is 49, and 49 - 7 is 42.

Hope this helped!

7 0
1 year ago
The surface area of a typical classroom floor is closest to______.
avanturin [10]
Answer would be C. Why A would be incorrect: 100m^2 is 100m × 100 m. That would be as big as a football field. Why B would be incorrect: 1cm^2 is 1cm × 1cm. You can use a regular 15 cm to measure a piece of paper with the length of 1cm each side. Why C would be correct: 1m^2 = 1m × 1m and it is also equals to 60cm × 60 cm. A 1 meter ruler = 60 cm = 4 times of your average 15 cm ruler. So, it is reasonable that a classroom is 10m by 10m in length and breadth. Why D would be incorrect: The same explanation applies to here as well. Things that can be measured with 1m × 1m is a square table so your classroom can't be that small to fit an average of 30 to 40 students in there. I hope my explanations were detailed and easy to understand. :)
4 0
3 years ago
Read 2 more answers
34 is what percent of 80? (Round to the nearest whole number)
Marizza181 [45]

Answer:

42.5

34:80*100 =

(34*100):80 =

3400:80 = 42.5

8 0
3 years ago
In a math contest, Jack earned 10 points for every problem solved correctly and lost 1 point every time he did not label his ans
Andrew [12]
T=90-Z

Because 9 solved correctly*10 points per question answered correctly=90 and each incorrect question is a point lost
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2 years ago
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zubka84 [21]
The answer that fits the blank given above is BEARISH SIGNAL. When we say bearish signal, this is an indication that there is a possibility that stocks will decrease or will perform less than it is expected. The opposite for bearish signal is the bullish signal which means otherwise.
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3 years ago
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